Ingredients

• 1 1/4 pounds fresh or frozen jumbo shrimp in shells and/or 1 pound skinless, boneless chicken breasts or thighs
  
• 1 large red or green sweet pepper, cut into bite-size pieces
  
• 1 medium red onion, cut into wedges
  
• 1 cup orange marmalade
  
• 1/3 cup lime juice
  
• 1/4 cup tequila (optional)
  
• 2 tablespoons cooking oil
  
• 2 tablespoons snipped fresh cilantro
  
• 2 cloves garlic, minced
  
• 6 1/2-inch-thick slices peeled fresh pineapple